carbide cylinder bore conversion (Bore Tech)
FHPREMACH at aol.com
FHPREMACH at aol.com
Mon Jan 11 07:58:38 GMT 1999
In a message dated 1/10/99 1:24:00 PM Pacific Standard Time, bearbvd at sni.net
writes:
<< Not really so when dealing with an 8 u inch polished finish. If the bores
are the same diameter (within a couple of ten thousandths, and all
straight, no prob. I thought about lapping each set of rings to its own
hole, but decided that the extra block clean-up was a nightmare (not to
mention stray lapping compound) waiting to happen. (Lapping compound in
this case would be more like jewelers' rouge than what you are used to
thinking of for lapping valves. WAY finer.) Lots of serious HP boat motors
are pre-seated this way. It works. Also saves a LOT of break in debris from
floating around insside the engine.
Regards, Greg >>
You might try using your cylinder sleeve with a bit of Diamond Lapping
Compound. We used to use it on solid laps for very fine finishing on aluminum
and andodized surfaces for Hydraulic actuators. These were lapped for finish
and size and fitted with 0.0001-0.0002 slip fits. you might think about making
air cylinder operated vertical lap if you want to get it done quickly, also no
side load on the pistons that way.
Fred
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